摘要
Acomputationalfluiddynamics(CFD)approachisusedtostudytherespiratoryairflowdynamicswithinahumanupperairway.Theairwaymodelwhichconsistsoftheairwayfromnasalcavity,pharynx,larynxandtracheatotriplebifurcationisbuiltbasedontheCTimagesofahealthyvolunteerandtheWeibelmodel.Theflowcharacteristicsofthewholeupperairwayarequantitativelydescribedatanytimelevelofrespiratorycycle.Simulationresultsofrespiratoryflowshowgoodagreementwiththeclinicalmeasures,experimentalandcomputationalresultsintheliterature.Theairmainlypassesthroughthefloorofthenasalcavityinthecommon,middleandinferiornasalmeatus.Thehigherairwayresistanceandwallshearstressesaredistributedontheposteriornasalvalve.Althoughtheairwaysofpharynx,larynxandbronchiexperiencelowshearstresses,itisnotablethatrelativelyhighshearstressesaredistributedonthewallofepiglottisandbronchialbifurcations.Besides,two-dimensionalfluid-structureinteractionmodelsofnormalandabnormalairwaysarebuilttodiscusstheflow-induceddeformationinvariousanatomymodels.Theresultshowsthatthewalldeformationinnormalairwayisrelativelysmall.
出版日期
2009年06月16日（中国期刊网平台首次上网日期，不代表论文的发表时间）
